Online Calibration of Voltage Transformers Using Synchrophasor Measurements

Pal, Anamitra; Chatterjee, Paroma; Thorp, James S.; Centeno, Virgilio

doi:10.1109/tpwrd.2015.2494058

Cited by 62 publications

(36 citation statements)

References 22 publications

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“…The previous works proposes a synchrophasor state estimator (SynSE)– based supervisory system to improve the security of existing scheme. The work of Pal, Chatterjee, Thorp, and Centeno suggests a useful approach to come across the feasible location, where a high quality of measurement to be addressed to bring the calibration error of all measurements below a predefined threshold. The adaptive current differential protection scheme was proposed in Dambhare, Soman, and Chandorkar's work for transmission line protection, in which the error analysis of conventional phasor approach was analysed using the dynamic phasor.…”

Section: Introductionmentioning

confidence: 99%

Adaptive digital distance relay for SSSC‐based double‐circuit transmission line using phasor measurement unit

Raju

Singh

Thakre³

et al. 2018

Int Trans Electr Energ Syst

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Summary The existence of midpoint series flexible alternating current transmission system (FACTS) devices leads to degrade the performance of mho relay, leading in erroneous estimation of fault location, ie, overreach or underreach for wide variation in network parameters. This research article proposes a novel mho relay algorithm to improve the performance of distance relay in presence of FACTS device using phasor measurement unit (PMU). First, the complete model of transmission system employing static synchronous series compensator (SSSC) and its control strategy is described analytically, where the error introduced in measurement of impedance due to SSSC on the performance of distance relay. Second, a novel mho relay procedure is developed based on PMU to protect the first zone of double‐circuit transmission line for single line‐to‐ground (SLG) fault. The proposed work is analysed and simulated with 48‐pulse SSSC carried out with Bergeron model of transmission line using power system computer‐aided design (PSCAD) computer simulation. Finally, the simulation results represent that the suggested adaptive scheme is truthful, reliable, and secure with change in compensation level of SSSC.

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Section: Introductionmentioning

confidence: 99%

Adaptive digital distance relay for SSSC‐based double‐circuit transmission line using phasor measurement unit

Raju

Singh

Thakre³

et al. 2018

Int Trans Electr Energ Syst

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“…Moreover, voltage measurements in three-phase distribution systems tend to be spatially coupled leading to low dimensionality in the setting of network inference [8]. Lastly, PMU readings are subject to noise [9], which can corrupt an inference algorithm. This paper builds on our prior work on the inverse power flow (IPF) problem [10] which concerns inferring the admittance matrix of a radial or a mesh network from measured voltage and current phasors of all buses or just a subset of them.…”

Section: Introductionmentioning

confidence: 99%

Event detection and localization in distribution grids with phasor measurement units

Ardakanian

Yuan

Dobbe

et al. 2017

2017 IEEE Power &Amp; Energy Society General Meeting

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Abstract-The recent introduction of synchrophasor technology into power distribution systems has given impetus to various monitoring, diagnostic, and control applications, such as system identification and event detection, which are crucial for restoring service, preventing outages, and managing equipment health. Drawing on the existing framework for inferring topology and admittances of a power network from voltage and current phasor measurements, this paper proposes an online algorithm for event detection and localization in unbalanced three-phase distribution systems. Using a convex relaxation and a matrix partitioning technique, the proposed algorithm is capable of identifying topology changes and attributing them to specific categories of events. The performance of this algorithm is evaluated on a standard test distribution feeder with synthesized loads, and it is shown that a tripped line can be detected and localized in an accurate and timely fashion, highlighting its potential for realworld applications.

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“…( ) = (7) The number of PMUs required for complete observability (while considering zero injection buses) for the IEEE-118 bus system is 29. They were placed on buses 3,8,11,12,17,20,23,28,34,37,40,45,49,52,56,62,65,72,75,77,80,85,86,91,94,102,105,110, and 114.…”

Section: =1mentioning

confidence: 99%

Application of Machine Learning for Online Dynamic Security Assessment in Presence of System Variability and Additive Instrumentation Errors

Nath

Biswas

Pal

2019

2019 North American Power Symposium (NAPS)

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Large-scale blackouts that have occurred in the past few decades have necessitated the need to do extensive research in the field of grid security assessment. With the aid of synchrophasor technology, which uses phasor measurement unit (PMU) data, dynamic security assessment (DSA) can be performed online. However, existing applications of DSA are challenged by variability in system conditions and unaccounted for measurement errors. To overcome these challenges, this research develops a DSA scheme to provide security prediction in real-time for load profiles of different seasons in presence of realistic errors in the PMU measurements. The major contributions of this paper are: (1) develop a DSA scheme based on PMU data, (2) consider seasonal load profiles, (3) account for varying penetrations of renewable generation, and (4) compare the accuracy of different machine learning (ML) algorithms for DSA with and without erroneous measurements. The performance of this approach is tested on the IEEE-118 bus system. Comparative analysis of the accuracies of the ML algorithms under different operating scenarios highlights the importance of considering realistic errors and variability in system conditions while creating a DSA scheme.

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Online Calibration of Voltage Transformers Using Synchrophasor Measurements

Cited by 62 publications

References 22 publications

Adaptive digital distance relay for SSSC‐based double‐circuit transmission line using phasor measurement unit

Adaptive digital distance relay for SSSC‐based double‐circuit transmission line using phasor measurement unit

Event detection and localization in distribution grids with phasor measurement units

Application of Machine Learning for Online Dynamic Security Assessment in Presence of System Variability and Additive Instrumentation Errors

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